Mash the bananas with a fork
Chop the butter and mix it in a bowl with the mashed bananas
Mix flour and baking powder in a separate bowl
Mix all ingredients in a large bowl except the chocolate
Butter the pan with a bit of butter or oil and pour the dough into the pan
Bake the bread in the oven at 175° C for 25-30 min
Let the cake cool
Melt the chocolate in a water bath and pour it over the cooled cake
Let the chocolate cool and enjoy!